Run results for: Arrays into Object, reduce vs for #5

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; Redmi Note 9 Pro Max) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.127 Mobile Safari/537.36

Browser: Chrome Mobile 85

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
reduce	3.8 Ops/sec
for	98.6 Ops/sec

Script Preparation code:

var ppl = []
for(var i=0; i<20000; i++) {
	ppl.push({ id: i, name: i+"" }) 
}

AخA
 
var ppl = []for(var i=0; i<20000; i++) {    ppl.push({ id: i, name: i+"" }) }

Tests:

var byId = ppl.reduce((stored, current) => ({ ...stored, [current.id]: current }), {});

 
var byId = ppl.reduce((stored, current) => ({ ...stored, [current.id]: current }), {});

var byId = {}
for(var i=0;i<ppl.length;i++) {
  byId[ppl[i].id] = ppl[i]
}

 
var byId = {}for(var i=0;i<ppl.length;i++) {  byId[ppl[i].id] = ppl[i]}